[9][10] Just over a month after he became the Bangladesh Army chief, amid the Student–People's uprising, he announced the resignation of Sheikh Hasina as the prime minister on 5 August 2024.

[15] During his long military career, he taught at the Non-Commissioned Officer's Academy (NCOA), School of Infantry and Tactics (SI&T) and Bangladesh Institute of Peace Support Operation Training (BIPSOT).

As lieutenant colonel, he directed Army Security Unit, Dhaka Cantonment and commanded the 17th East Bengal Regiment at Momenshahi.

He was then upgraded to brigadier general and appointed as commander of the 46th Independent Infantry Brigade in Dhaka and then as Deputy Military Secretary at Army Headquarters (AHQ).

[18] On 30 November 2020, Waker was promoted to lieutenant general and appointed Principal Staff Officer of Armed Forces Division.

[22] General Waker is also worked as the acting chairman of the Central Coordination Committee of Cantonment Public Schools and Colleges.

These new advisers included student protesters, such as, Nahid Islam and Asif Mahmud, whom led the quota reform and the non-cooperation movement culminating in the ousting of Sheikh Hasina.